MET-BNC-MODULE4

MET-BNC-MODULE4

1. Under which conditions would you expect the heaviest clear ice accretion to occur in a CB?

a) Close to the freezing level
b) Between -20Â°C and -30Â°C
c) Between -30Â°C and -40Â°C
d) Between -2Â°C and -15Â°C

2. Clear ice forms on an aircraft by the freezing of:

a) snow
b) small supercooled water drops
c) water vapour
d) large supercooled water drops

3. What weather conditions would you expect at a squall line?

a) Fog
b) Strong whirlwinds reaching up to higher levels
c) Thunderstorms
d) Continuous heavy rain

4. What is the approximate maximum diameter of a the area affected by damaging winds at the surface caused by a microburst ?

a) 20 km
b) 4 km
c) 400 m
d) 50 km

5. In general, the visibility during rainfall compared to during drizzle is

a) less
b) the same
c) in rain - below 1 km, in drizzle - more than 2 km
d) greater

6. Which weather chart gives information about icing ?

a) 500 hPa chart
b) 700 hPa chart
c) Significant weather chart
d) Surface chart

7. What is a trend forecast?

a) A routine report
b) A route forecast valid for 24 hours
c) An aerodrome forecast valid for 9 hours
d) A landing forecast appended to METAR/SPECI, valid for 2 hours

8. What does the expression "Broken (BKN)" mean?

a) 3-4 Eights of the sky is cloud covered
b) 5-7 Eights of the sky is cloud covered
c) Nil significant cloud cover
d) 3-5 Eights of the sky is cloud covered

9. What does the abbreviation "nosig" mean?

a) No significant changes
b) Not signed by the meteorologist
c) No report received
d) No weather related problems

10. In which weather report would you expect to find information about icing conditions on the runway?

a) METAR
b) SIGMET
c) TAF
d) GAFOR

11. In which of the following 1850 UTC METAR reports, is the probability of fog formation, in the coming night, the highest?

a) VRB01KT 8000 SCT250 11/10 Q1028 BECMG 3000 BR =
b) VRB02KT 2500 HZ SCT120 14/M08 Q1035 NOSIG =
c) 00000KT 9999 SCT300 21/01 Q1032 NOSIG =
d) 22004KT 6000 -RA SCT012 OVC030 17/14 Q1009 NOSIG =

12. Which of the following extracts of weather reports could be, in accordance with the regulations, abbreviated to "CAVOK"? (MSA above ground: LSZB 10000 FT, LSZH 8000 FT, LSGG 12000 FT, LFSB 6000 FT)

a) LSGG 22003KT 9999 SCT120 BKN280 09/08 Q1026 BECMG 5000 BR =
b) LFSB 00000KT 9000 SCT080 22/15 Q1022 NOSIG =
c) LSZH 26024G52KT 9999 BKN060 17/14 Q1012 RETS TEMPO 5000 TSRA =
d) LSZB 30004KT 9999 SCT090 10/09 Q1006 NOSIG =

13. Which of the following weather reports could be, in accordance with the regulations, abbreviated to "CAVOK"? (MSA above ground: LSZB 10000 FT, LSZH 8000 FT, LSGG 12000 FT, LFSB 6000 FT)

a) LFSB 24008KT 9999 SCT050 18/11 Q1017 RERA NOSIG =
b) LSZB 28012KT 9999 OVC100 16/12 Q1012 BECMG 5000-RA=
c) LSGG 22006KT 9999 BKN090 17/15 Q1008 RERA NOSIG =
d) LSZH VRB02KT 9000 BKN080 21/14 Q1022 NOSIG =

14. Within a short interval, several flight crews report that they have experienced strong clear air turbulence in a certain airspace. What is the consequence of these reports?

a) The competent aviation weather office will issue a SIGMET
b) The competent aviation weather office will issue a storm warning
c) The airspace in question, will be temporarily closed
d) The competent aviation weather office will issue a SPECI

15. Flight from Bordeaux to Amsterdam, ETA 2100 UTC. What lowest cloud base is forecast for arrival at Amsterdam? TAF EHAM 281500Z 281601 14010KT 6000 -RA SCT025 BECMG 1618 12015G25KT SCT008 BKN013 TEMPO 1823 3000 RA BKN005 OVC010 BECMG 2301 25020KT 8000 NSW BKN020 =

a) 500 m
b) 250 FT
c) 800 FT
d) 500 FT

16. Flight Lisbon to Bordeaux, ETA 1800 UTC. What type of precipitation is forecast on the approach to Bordeaux ? TAF LFBD 281400Z 281524 26015KT 9999 SHRA BKN020 TEMPO 1620 26020G30KT 8000 +SHRA BKN015CB PROB30 TSRA =

a) Continuous moderate rain
b) Light drizzle and fog
c) Moderate snow showers
d) Heavy rain showers

17. Flight Lisbon to Bordeaux, ETA 1800 UTC. At ETA Bordeaux what is the lowest quoted visibility forecast ? TAF LFBD 281400Z 281524 26015KT 9999 SHRA BKN020 TEMPO 1620 26020G30KT 8000 +SHRA BKN015CB PROB30 TSRA =

a) 8 NM
b) 10 NM
c) 10 or more km
d) 8 km

18. Flight from Bordeaux to Amsterdam, ETA 2100 UTC. At ETA Amsterdam what surface wind is forecast ? TAF EHAM 281500Z 281601 14010KT 6000 -RA SCT025 BECMG 1618 12015G25KT SCT008 BKN013 TEMPO 1823 3000 RA BKN005 OVC010 BECMG 2301 25020KT 8000 NSW BKN020 =

a) 250Â° / 20 kt
b) 300Â° / 15 kt maximum wind 25 kt
c) 140Â° / 10 kt
d) 120Â° / 15 kt gusts 25 kt

19. Flight from Bordeaux to Amsterdam, ETA 2100 UTC. What is the minimum visibility forecast for ETA Amsterdam ? TAF EHAM 281500Z 281601 14010KT 6000 -RA SCT025 BECMG 1618 12015G25KT SCT008 BKN013 TEMPO 1823 3000 RA BKN005 OVC010 BECMG 2301 25020KT 8000 NSW BKN020 =

a) 5 NM
b) 6 km
c) 3 km
d) 5 km

20. At what degree of icing can ICAO's "No change of course and altitude necessary" recommendation be followed?

a) Moderate
b) Light
c) Severe
d) Extreme

21. When will the surface wind in a METAR record a gust factor ?

a) When gusts are at least 10 knots above the mean wind speed
b) With gusts of at least 35 knots
c) With gusts of at least 25 knots
d) When gusts are at least 15 knots above the mean wind speed

22. What are the images of satellites provided daily by the Weather Service used for?

a) To measure wind currents on the ground
b) To locate fronts in areas with few observation stations
c) To help provide 14-day forecasts
d) To locate precipitation zones

23. Which of the following causes echoes on meteorological radar screens?

a) Water vapour
b) Hail
c) Any cloud
d) Fog

24. Which constant pressure altitude chart is standard for FL 100?

a) 850 hPa
b) 700 hPa
c) 300 hPa
d) 500 hPa

25. Which constant pressure altitude chart is standard for FL 180?

a) 300 hPa
b) 200 hPa
c) 700 hPa
d) 500 hPa

26. Which constant pressure altitude chart is standard for FL 300?

a) 200 hPa
b) 700 hPa
c) 300 hPa
d) 500 hPa

27. Which constant pressure altitude chart is standard for FL 390?

a) 700 hPa
b) 300 hPa
c) 200 hPa
d) 500 hPa

28. If you are planning a flight at FL 170, which of these upper wind and temperature charts would be nearest your flight level ?

a) 500 hPa
b) 700 hPa
c) 850 hPa
d) 300 hPa

29. If you are planning a flight at FL 290, which of these upper wind and temperature charts would be nearest your flight level ?

a) 300 hPa
b) 500 hPa
c) 850 hPa
d) 700 hPa

30. When planning a flight at FL 60, which upper wind and temperature chart would be nearest your flight level ?

a) 500 hPa
b) 700 hPa
c) 300 hPa
d) 850 hPa

31. When planning a flight at FL 110, which upper wind and temperature chart would be nearest your flight level ?

a) 850 hPa
b) 700 hPa
c) 500 hPa
d) 300 hPa

32. What information is required to convert a minimum safe altitude into a lowest usable flight level?

a) Lowest value of QNH and the highest negative temperature deviation from ISA.
b) Lowest value of QNH and the lowest negative temperature deviation from ISA
c) Highest value of QNH and the highest negative temperature deviation from ISA.
d) Highest value of QNH and the highest positive temperature deviation from ISA

33. What is the relationship, if any, between QFE and QNH at an airport situated 50 FT below sea level?

a) No clear relationship exists.
b) QFE is smaller than QNH.
c) QFE is greater than QNH.
d) QFE equals QNH.

34. During a flight at FL 100 from Marseille (QNH 1012 hPa) to Palma de Mallorca (QNH 1015 hPa), an aircraft remains at a constant true altitude. The reason for this is that:

a) the air at Marseille is colder than that at Palma de Mallorca.
b) the altimeters are erroneous, and need to be tested.
c) the air at Marseille is warmer than that at Palma de Mallorca.
d) one of the two QNH values may be incorrect.

35. At what time of the year are typhoons most likely to occur over the southern islands of Japan?

a) September to January.
b) January to May.
c) May to July.
d) July to November.

36. What units are used to report vertical wind shear?

a) kt.
b) kt/100 FT.
c) m/sec.
d) m/100 FT.

37. Which of the following weather reports is a warning of conditions that could be potentially hazardous to aircraft in flight ?

a) SPECI.
b) ATIS.
c) SIGMET.
d) TAF.

38. In which of the following circumstances is a SIGMET issued ?

a) Severe mountain waves.
b) A sudden change in the weather conditions contained in the METAR.
c) Clear ice on the runways of an aerodrome.
d) Fog or a thunderstorm at an aerodrome.

39. Rime ice forms through the freezing onto aircraft surfaces of

a) water vapour.
b) small supercooled water drops.
c) large supercooled water drops.
d) snow.

40. How does a pilot react to heavy freezing rain at 2000 FT/AGL, when he is unable to deice, nor land?

a) He turns back before the aircraft loses manoeuvrability.
b) He continues to fly at the same altitude.
c) He descends to the warm air layer below.
d) He ascends to the cold air layer above.

41. An aircraft is flying through the polar front jet stream from south to north, beneath the core. How would the OAT change, in the northern hemisphere, during this portion of the flight?

a) It decreases.
b) It increases.
c) It remains constant.
d) It first increases, then decreases.

42. What is the average height of the arctic jet stream core?

a) 20000 FT .
b) 40000 FT.
c) 30000 FT.
d) 50000 FT.

43. What is the approximate ratio between height and width for a jet stream cross section?

a) 1/1000
b) 1/100
c) 01-Jan
d) 10-Jan

44. Which jet stream blows all year round, over the northern hemisphere?

a) The polar night jet stream.
b) The subtropical jet stream.
c) The equatorial jet stream.
d) The arctic jet stream.

45. What is the average height of the jet core within a polar front jet stream?

a) 50000 FT.
b) 40000 FT.
c) 30000 FT.
d) 20000 FT.

46. An aircraft is flying from south to north, above the polar front jet stream, at FL 400 in the southern hemisphere. What change, if any, in temperature will be experienced ?

a) It decreases.
b) It increases.
c) It stays the same.
d) It decreases and then increases.

47. A wind speed of 350 kt within a jet stream core should be world-wide regarded as:

a) not possible.
b) a common occurrence.
c) possible but a very rare phenomenon.
d) not unusual in polar regions.

48. Does the following report make sense? METAR LSZH 182320Z VRB02KT 5000 MIFG 02/02 Q1015 NOSIG

a) The report is nonsense, because it is impossible to observe a visibility of 5 km if shallow fog is reported.
b) The report is not possible, because, with a temperature of 2Â°C and a dew point of 2Â°C there must be uniform fog.
c) The report is possible, because shallow fog is defined as a thin layer of fog below eye level.
d) The report would never be seen, because shallow fog is not reported when the visibility is more than 2 km.

49. You receive the following METAR: LSGG 120750Z 00000KT 0300 R05/0700N FG VV001 M02/M02 Q1014 NOSIG = What will be the RVR at 0900 UTC?

a) 700 m.
b) The RVR is unknown, because the "NOSIG" does not refer to RVR.
c) 300 m.
d) 900 m.

50. Which of the four answers is a correct interpretation of data from the following METAR ? LSZH 050820Z 16003KT 0400 R14/P1500 R16/1000 FZFG VV003 M02/M02 Q1026 BECMG 2000 BR =

a) RVR for runway 14 1500 m, visibility 400 m, QNH 1026 hPa, wind 160Â° at 3 kt.
b) Visibility 400 m, RVR for runway 16 1000 m with no distinct tendency, dew point -2Â°C, freezing fog.
c) RVR for runway 16 1000 m with no distinct tendency, visibility increasing in the next 2 hours to 2000 m, vertical visibility 300 m, temperature -2Â°C.
d) Visibility 1000 m, RVR 400 m, freezing level at 300 m, variable winds, temperature 2Â°C.

This is more feedback!

This is the feedback!

Data Base Login Information: Please make
sure that you enter your name before
submitting your results.

My Name
*Enter your name here